Removing the oxygen sensor monitor

NOTE: DANGER
High-voltage system.
The high-voltage system operates on the basis of hazardous, electrical voltage and high currents. Mortal hazard through electric shock!

All work on the high-voltage system may only be carried out by specially trained and technically experienced personnel.
For additional information see:
SAFETY INSTRUCTIONS ON HANDLING HYBRID CARS .
For additional information see:
NOTES ON REPAIR OF HIGH-VOLTAGE BATTERY UNIT .

Preliminary work

Refer to REMOVING THE ACOUSTIC COVER .
Refer to REMOVING THE CYLINDER HEAD COVER ACOUSTIC COVER .
Refer to REMOVING THE LAMBDA OXYGEN SENSOR .

Oxygen sensor monitor

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WARNING: Hot surfaces.
Risk of burning!

Perform all work only on components that have cooled down.

NOTE: RISK OF DAMAGE
Damage to wires when disconnecting connectors and plug connections.
Sheared wires can cause a short circuit.

Do not pull on wires when disconnecting connectors and plug connections.

NOTE: The cable of the oxygen sensor monitor is gray. The installation location of the oxygen sensor monitor is behind the catalytic converter.

Disconnecting all battery ground leads

See additional information.

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Release heat shield (1) on the side member.

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Release the nut (1).
Loosen screws (2).
Set heat shield (3) aside.

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Release cable from power distribution of front positive battery cable.
Release cover (1) at detents (2).
Remove the cover (1) in an upwards direction.

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Undo the nut (1) and feed out the corresponding cable.
Undo the nuts (2) and feed out the corresponding cables.
Set aside all cables.

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Unlock connector (1) with screwdriver (2) and remove from the carrier plate.
Unlock and disconnect connector (1).

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Release the oxygen sensor monitor (1) with the special tools 0 493 751 (11 9150) and 0 491 075 (11 7 030) .
Remove the oxygen sensor monitor (1).

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